[LTP] [PATCH] Modify the test logic of mincore.

[zhanglianjie <zhanglianjie@uniontech.com>]

Hi!
>>> This does not make any sense, the kernel commit explicitly states that
>>> all mapped pages are reported as in core. We do call mlock() in the
>>> child, which will fault all the pages and lock them in memory. So the
>>> test should work both before and after the fix as well.
>>>
>>> The kernel commit in question weakened mincore() in a sense that it's
>>> more likely to report pages in core than it previously was. Now all that
>>> is needed is to fault the pages by reading some bytes from them to make
>>> sure they are reported as in core.
>>>
>>> If the test fails for you, something is probably broken at your end.
>>>
>>
>> Using the CVE patch on mips, the test will fail because the child
>> process mlocks all pages, but the parent process cannot obtain these
>> pages through mincore and is locked.
> 
> Sounds like a kernel bug.
> 
CVE list has provided repair patches, The patch I submitted this time is 
to modify the logic of the test results, do you plan to incorporate it?